Google Drive for Collaboration

http://drive.google.com

Click on these links to enter the "sandbox" (google docs created for playing in today)
Document
Spreadsheet
Presentation
Drawing
Desmos Graph
Geogebra App

What is Google Drive?

How to use Google Drive handout

Check out all the apps you can connect to your Google Drive:

https://chrome.google.com/webstore/category/collection/drive_apps?hl=en